RI TDI as credit on MA return

  http://community.intuit.com/posts/ritdi-deductible-on-mass

I've called and spent 1/2 hr on the phone with Mass Dept. of Revenue, I've searched the internet, my clients have called and no one from it Mass Dept. of Revenue has yet to give us an answer.   Our software does not yet have a line for it nor instructions.  It's very frustraing considering we only have until April 15 to ammend 2008 - it is retroactive to all "open years". 

So far, this is all I've found and there is no place on the CA-6 that has room for SDI or TDI:

"Taxpayers and practitioners are encouraged to file for abatement of tax on-line at “Webfile for Income” found on the Department’s website at www.mass.gov/dor.  This is a secure site and its use will speed the processing of abatement applications.  Taxpayers may also file a paper Application for Abatement/Amended Return, Form CA-6 which can be found under the “Forms” section of the Department’s website.  Taxpayers should be prepared to submit the following documentation: a copy of the Rhode Island W-2, indicating the amount of RISDI located in Box 14; and a copy of the tax return(s) filed with Rhode Island.  If additional documentation is necessary, taxpayers will be notified by the Department."